Virtual Functions Hackerrank Solution in C++

Virtual Functions Hackerrank Solution in C++. This problem is to get you familiar with virtual functions. Create three classes Person, Professor and Student. The class Person should have the data members' names and ages. The classes Professor and Student should inherit from the class Person.

The class Professor should have two integer members: publications and cur_id. There will be two member functions: getdata and put data. The function getdata should get the input from the user: the name, age and publications of the professor. The function putdata should print the name, age, publications and the cur_id of the professor.

The class Student should have two data members: marks, which is an array of size 6 and cur_id. It has two member functions: getdata and putdata. The function getdata should get the input from the user: the name, age, and marks of the student in 6 subjects. The function putdata should print the name, age, the sum of the marks and the cur_id of the student.

For each object being created by the Professor or the Student class, sequential IDs should be assigned to them starting from. Solve this problem using virtual functions, constructors and static variables. You can create more data members if you want.

Note: Expand the main function to look at how the input is being handled.

Input Format

The first line of input contains the number of objects that are being created. If the first line of input for each object is 1, it means that the object being created is of the Professor's class, you will have to input the name, age and publications of the professor.

If the first line of input for each object is 2, it means that the object is of the Student class, you will have to input the name, age and marks of the student in 6 subjects.

Output Format

There are two types of output depending on the object.

If the object is of type Professor, print the space-separated name, age, publications and id on a new line.

If the object is of the Student class, print the space-separated name, age, the sum of the marks in 6 subjects and id on a new line.

Sample Input

Walter 56 99

Jesse 18 50 48 97 76 34 98

Pinkman 22 10 12 0 18 45 50

White 58 87

Sample Output

Walter 56 99 1

Jesse 18 403 1

Pinkman 22 135 2

White 58 87 2

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Virtual Functions Hackerrank Solution in C++

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <cassert>
using namespace std;

/*Code Start From Here */
template < class T>
	class AddElements
	{
		T element;
		public:
			AddElements(T arg)
			{
				element = arg;
			}

		T add(T x)
		{
			return x + element;
		}
	};

template < >
	class AddElements < string>
	{
		string element;
		public: AddElements(string arg)
		{
			element = arg;
		}

		string concatenate(string arg)
		{
			string s = element + arg;
			return s;
		}
	};

/*Code End From Here */

int main()
{
	int n, i;
	cin >> n;
	for (i = 0; i < n; i++)
	{
		string type;
		cin >> type;
		if (type == "float")
		{
			double element1, element2;
			cin >> element1 >> element2;
			AddElements<double> myfloat(element1);
			cout << myfloat.add(element2) << endl;
		}
		else if (type == "int")
		{
			int element1, element2;
			cin >> element1 >> element2;
			AddElements<int> myint(element1);
			cout << myint.add(element2) << endl;
		}
		else if (type == "string")
		{
			string element1, element2;
			cin >> element1 >> element2;
			AddElements<string> mystring(element1);
			cout << mystring.concatenate(element2) << endl;
		}
	}

	return 0;
}